The mathematical expression for optimal rate allocation is as follows.

A mathematical expression is a sequence of symbols which can be evaluated.

In a mathematical expression, the order of operation is carried out from left to right.

The mathematical expression of the law can be derived as following.

Any mathematical expression can be presented as a network operator matrix.

The Hamiltonian is just a mathematical expression, rather than a form of energy.

Indeed, individual elements of any mathematical expression may be referred to as terms.

There are further explanations in the next section with some mathematical expressions.

I was a mathematical expression in a complex scheme of geometry.

Conversely, any mathematical expression may be viewed as a program.